Genetic Relationships among Cyanobacterial Strains Originally Designated as ‘Anacystis nidulans’ and Some Other Synechococcus Strains

SUMMARY: Determinations of the genetic relationships between six Synechococcus strains demonstrated that three strains, originally designated as ‘Anacystis nidulans’, belong to one and the same species. The other three strains belong to other species and/or genera. This conclusion is discussed with regard to a recently proposed revised classification of the genus Synechococcus.